07-04-2023, 10:41 AM
To find a loctal test socket adapter (aka a straight through adapter, which is probably what Philco specified for that radio as Ron pointed out) search for "loctal test adapter" without the quotes on the auction site. The military U-103/U adapters normally sell for $20 to $30, and they are extremely well built (your tax dollars at work). I have a few military test socket adapters.
Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
https://plymouthcolony.net/starcity/radios/